is equivalent to

• 
• 
• 
• 

B.

______________ gives hardness to stainless steel.

• Zinc

• Lead

• Carbon

• Tin

............ is a byproduct of sewage treatment and can be decomposed to produce bio-gas.

• Sewage

• Sludge

• Sewer

• Scum

'Alfalfa' is the name of a .............

• Mineral

• Tribe

• Grass

• Town

A fresh egg when placed in salt water will

• sink and go to the bottom

• sink but will not go to the bottom

• float

• burst